Great Lakes Forecast
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FZUS63 KLOT 161307
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
807 AM CDT Wed May 16 2018

FOR WATERS BEYOND FIVE NAUTICAL MILES OF SHORE ON Lake Michigan.

Waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.SYNOPSIS...A weak high pressure ridge of 29.9 inches will remain
in place today across southern Lake Michigan before weakening
through Thursday. Low pressure of 29.6 inches over southern
Ontario will shift eastward into Quebec later today. This low will
push a cold front down the lake late tonight into Thursday
morning. A stronger high of 30.3 inches will then shift over
southeastern Canada and the Upper Great Lakes region Thursday
night into Friday, while a trough develops across the central and
northern Plains through the end of the work week.

LMZ261-362-364-366-563-565-567-868-162145-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
807 AM CDT Wed May 16 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Southwest winds 5 to 10 kt increasing to 10 to
20 kt. Waves 1 to 3 ft building to 2 to 4 ft.
.TONIGHT...Southwest winds 10 to 20 kt veering to northeast 10 to
20 kt. Waves 2 to 4 ft.
.THURSDAY...Northeast winds 10 to 20 kt. Waves 3 to 5 ft.
.THURSDAY NIGHT...East winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.FRIDAY...East winds 10 to 15 kt becoming northeast. Waves 1 to
3 ft.
.FRIDAY NIGHT...East winds 10 to 20 kt becoming southeast. Waves
1 to 3 ft.
.SATURDAY...South winds 5 to 10 kt veering to west 10 to 15 kt.
Waves 1 to 2 ft.
.SUNDAY...North winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-162145-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
807 AM CDT Wed May 16 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Variable winds 5 to 10 kt. Waves 1 ft or less.
.TONIGHT...Variable winds 5 to 10 kt becoming north overnight.
Waves 1 ft or less.
.THURSDAY...Northeast winds 10 to 15 kt becoming north. Waves
2 to 4 ft.
.THURSDAY NIGHT...Northeast winds 10 to 20 kt becoming east.
Waves 3 to 5 ft.
.FRIDAY...East winds 10 to 20 kt becoming northeast 10 to 15 kt.
Waves 2 to 4 ft subsiding to 1 to 3 ft.
.FRIDAY NIGHT...East winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 1 to 3 ft.
.SATURDAY...East winds 5 to 10 kt. Waves 1 to 2 ft.
.SUNDAY...Northeast winds 10 to 20 kt becoming north. Chance of
rain showers and thunderstorms. Waves 2 to 4 ft.

$$
LMZ761-162145-
MAFOR 1615/
MICHIGAN NORTH 11500 11510 13520 13120. Waves 1 to 3 ft building
to 2 to 4 ft today and continuing 2 to 4 ft tonight.

MICHIGAN SOUTH 15900 11800 11810. Waves 1 ft or less.

$$

- Izzi

Experimental modernized open lake forecast is available online at
weather.gov/lot/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes



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